4results about How to "White appearance" patented technology

The invention discloses a low-absorption high-emission thermal control coating resistant to an aerodynamic thermal environment and a preparation method of the low-absorption high-emission thermal control coating. The coating comprises a base material and a coating body. The coating is of a bottom surface layer structure, an organic silicon resin functional group modified phenyl methyl silicon resin component A and an organic silicon resin functional group modified phenyl methyl silicon resin component B serve as a binding agent, a resin component A comprises basic resin and a crosslinking catalyst, and a resin component B comprises basic resin and a crosslinking agent; the bottom surface layer structure comprises a bottom layer and a surface layer; mixed powder of boron nitride, aluminum oxide and hollow glass microspheres is used as filler in the bottom layer; zinc titanate powder and aluminum oxide whiskers are used as fillers in the surface layer. Aiming at various harsh working conditions such as maintaining a heat balance state required by the spacecraft in complex environments such as raining, high-temperature and high-speed pneumatic scouring, high-low temperature alternation and space radiation, the operation stability of a cabin of the spacecraft after experiencing various environments is improved, and the in-orbit space application environment requirements of the subsequent spacecraft are met.

The present invention discloses a light-weight, high-temperature-resistant and fire-resistant fiberboard and a preparation method and preparation equipment thereof, and relates to the technical field of building materials. The preparation equipment includes mechanical and automated fiberboard forming equipment, an oven, a high-temperature calcining furnace and post-processing equipment. The raw materials for producing the light-weight, high-temperature-resistant and fire-resistant fiberboard are processed by the mechanical and automated fiberboard forming equipment, the oven, the high-temperature calcining furnace and the post-processing equipment in sequence to prepare the light-weight, high-temperature-resistant and fire-resistant fiberboard. The light-weight, high-temperature-resistant and fire-resistant fiberboard of the present invention has a flat, white and smooth appearance, light density, low thermal conductivity, excellent mechanical strength and structural strength, stable high-temperature performance, low shrinkage and low thermal conductivity, and can make the product energy saving reach more than 35%-65%, and can be widely used in various high-temperature industrial kilns, fireproof and heat insulation, military and aerospace hot surface insulation, mechanical and metallurgical heat treatment furnaces and other industrial kilns, hot surface linings, high-temperature experimental furnaces, and hot surface linings of vacuum furnaces.

A method for preparing a special metal abrasive for aluminum products belongs to the technical field of metal abrasive production. The method comprises the following steps: (1) deoxidizing the molten steel with aluminum, and then centrifugally granulating the molten steel to obtain a semi-finished metal abrasive; (2) drying, tempering, cooling, strengthening, and screening the semi-finished metal abrasive to obtain a special metal abrasive for aluminum products; wherein the cooling is performed by air cooling using an air separation device. The special metal abrasive for aluminum products of the present invention has a low oxide scale content, a bright white and uniform appearance, and a long service life.

This invention relates to the field of preparation technology of terephthalic acid dicamphor sulfonate organic amine salt, and particularly to a method for synthesizing terephthalic acid dicamphor sulfonate organic amine salt, comprising the following steps: neutralizing camphor sulfonic acid with an organic amine compound in a solvent to generate camphor sulfonate organic amine salt; and condensing camphor sulfonate organic amine salt with terephthalaldehyde under the catalysis of a non-metallic organic alkaline catalyst to obtain terephthalic acid dicamphor sulfonate organic amine salt. The method employs an organic amine neutralization and non-metallic organic alkaline catalytic system, avoiding the introduction of metal ions throughout the process. The product is terephthalic acid dicamphor sulfonate organic amine salt, and no subsequent ion exchange treatment is required, resulting in higher product safety, making it particularly suitable for high-end applications such as sunscreen cosmetics.